EP2072988A1 - Test method and device - Google Patents

Test method and device Download PDF

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Publication number
EP2072988A1
EP2072988A1 EP07024587A EP07024587A EP2072988A1 EP 2072988 A1 EP2072988 A1 EP 2072988A1 EP 07024587 A EP07024587 A EP 07024587A EP 07024587 A EP07024587 A EP 07024587A EP 2072988 A1 EP2072988 A1 EP 2072988A1
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EP
European Patent Office
Prior art keywords
pressure
inner channel
pressure difference
channel
composite pipe
Prior art date
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Granted
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EP07024587A
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German (de)
French (fr)
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EP2072988B1 (en
Inventor
Ralph-Peter Dr.-Ing. Hegler
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Individual
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Individual
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Priority to AT07024587T priority Critical patent/ATE497151T1/en
Priority to EP07024587A priority patent/EP2072988B1/en
Priority to DE502007006387T priority patent/DE502007006387D1/en
Publication of EP2072988A1 publication Critical patent/EP2072988A1/en
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Publication of EP2072988B1 publication Critical patent/EP2072988B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/283—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes for double-walled pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/11—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall
    • F16L11/118—Hoses, i.e. flexible pipes made of rubber or flexible plastics with corrugated wall having arrangements for particular purposes, e.g. electrically conducting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated

Definitions

  • the invention relates to a method and an apparatus for producing leak-tightly tested composite pipes.
  • the invention has for its object to provide a simple method and a corresponding device for generating tested for leaktight composite pipes.
  • the object is solved by the features of independent claims 1 and 5.
  • the gist of the invention is to create a pressure differential between the inner channel and the environment in a composite pipe having a continuous inner channel between the inner smooth-walled pipe and the outer corrugated pipe. If the composite pipe to be tested is tight, then a desired value arises with regard to the pressure difference, ie, for example, a stable negative pressure can be generated in the inner channel. If the inner tube has defects, air enters the inner channel at this point and the desired pressure differential value can not be adjusted.
  • Devices for producing double-walled composite pipes 1 made of thermoplastic material are for example from the EP 509 216 A2 (corresponding U.S. Patent 5,346,384 ) and the EP 563 575 A2 (corresponding U.S. Patent 5,320,797 ) known.
  • Composite pipes 1 have a smooth-walled, circular cylindrical Inner tube 2 and a surrounding, concentric, corrugated outer tube 3 on.
  • the outer tube 3 consists of ring-cylindrical wave crests 4 and intervening wave troughs 5, wherein the wave troughs are welded to the inner tube 2.
  • ring cylinder or the derived adjective “ring-cylindrical” are understood to refer to a body that is formed by parallel displacement of a closed ring with any contour.
  • the annular cylindrical wave peaks 4 can thus have, for example, a circular, oval or elliptical cross section.
  • ring spaces 6 are formed between each wave crest 4 and the inner tube 2 .
  • immediately adjacent annular spaces 6 are connected to each other by a connecting channel 7.
  • the wave trough 5 is not welded to the inner tube 2 along a short section.
  • the connection channels 7 are aligned with each other, that is, they are in the same angular position.
  • the extending from one end 8 to the other end 9 of the composite tube 1, continuously extending space between the inner tube 2 and the outer tube 3 consisting of alternating annular spaces 6 and connecting channels 7 is used as indoor Designated channel 10.
  • An apparatus 11 for producing leak-tightly tested composite pipes 1 has a pressure / negative pressure generating device designed as a vacuum pump 12. It is also possible to use a positive pressure generating pump.
  • the pump 12 has an inlet connection 13 and an outlet connection 14.
  • the outlet port 14 is open to the environment.
  • the inlet nozzle 13 is provided with a slide 15 for closing the inlet nozzle 13.
  • a conduit 16 is attached, which may be formed as a fixed tube or a hose.
  • a ventilation slide 17 attached, which makes it possible to connect the interior 18 of the conduit 16 with the environment. Downstream of the slide 17, a pressure-measuring device in the form of a manometer 19 for measuring the pressure in the interior 18 is provided on the line 16.
  • this has a sleeve 20 which is placed on the end 8 of the composite tube 1.
  • the sleeve 20 is internally formed such that the interior 18 of the conduit 16 is connected to the inner channel 10, but not to the composite tube interior 21. This can be achieved by concentric sealing rings, which surround the composite pipe 1 in the region of a wave trough 5 from the inside and outside.
  • the inner channel 10 is closed by a plug 22, which may be constructed similar to the sleeve 20. It is also possible, the composite tube 1 in the region of the end 9 in a wave trough fifth cut off and weld the connection channel 7 located there.
  • the composite pipe 1 can, as in Fig. 1 represented, in rolled-up form and be held together by Abbindeb section 23.
  • the composite pipe 1 to be tested can be immediately classified as "leaking".
  • a predetermined negative pressure in the inner channel 10 is generated, the slide 15 is closed and waited to see if the pressure measured by the pressure gauge 19 remains constant.
  • the composite pipe 1 is also classified as "leaking" and the sleeve 20 and the plug 22 are removed.
  • the pump 12 generates a pressure difference ⁇ p (t) between the inner duct 10 and the environment.
  • the development of the pressure difference ⁇ p (t) is measured by the manometer 19. It is compared whether or not the course of the pressure difference ⁇ p (t) corresponds to a target value ⁇ p SOLL (t) of a sealed composite pipe. Accordingly, the composite pipe to be tested is classified as "leaking" or "leaking".
  • This comparison can also be performed automatically by a data processing device connected to the pressure-measuring device in a data-transmitting manner. It is in principle possible to carry out the test method also with overpressure generated in the pump 12. It depends only on the pressure difference between the inner channel 10 and the environment. In addition, it is not mandatory required to close the inner channel 10 in the region of the end 9. There could also be a second, the pump 12 corresponding pump attached.
  • connection channels 7 are not all aligned, but each immediately adjacent connection channels 7 are offset by 90 ° from each other and this in the same angular direction, so that each fourth connection channel. 7 aligned with each other.
  • Fig. 9 to 10 show a third embodiment, wherein identical parts the same reference numerals as in the first embodiment and for the same effect, but constructively different features the same reference numerals with a trailing b are used.
  • all the connection channels 7 are aligned with each other.
  • the curved representation of the composite pipe 1 makes it clear that this may be a flexible or tightly curved composite pipe 1b.
  • FIG. 11 to 14 A fourth embodiment of the invention is described. Same parts received the same reference numerals as in the first embodiment. Structurally different, but functionally similar parts receive the same reference numerals with a c.
  • the essential difference from the first embodiment is that the composite pipe 1c has an oval cross-section.
  • An apparatus for producing oval composite pipes is for example from the DE 10 2006 048 512.2 from 13.10.2006 known.
  • the composite pipe 1c is constructed like the composite pipe 1. Only the cross section is - as from Fig. 12 visible - oval.
  • the composite pipe 1d has an oval cross section.
  • the immediately adjacent connection channels are each offset from one another in the same angular direction as in the case of the composite tube 1a, so that in each case all fourth connection channels 7 are aligned with one another.
  • the connecting channels 7 are located at the respective ends of the straight longitudinal sections 24 before the beginning of the circular arc sections 25, which together form the oval cross section.
  • FIGS. 18 and 19 A sixth embodiment of the invention will be described.
  • Structurally identical parts receive the same reference numerals as in the first embodiment.
  • Structurally different, but functionally similar parts receive the same reference numerals with a trailing e.
  • the composite pipe 1e has like the composite tubes 1c and 1d an oval cross-section. With respect to the curvature of the composite pipe, it corresponds to the composite pipe 1b.
  • the composite pipe 1e with an oval cross-section may be flexible or tightly curved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The method involves connecting a connection pipe (1) with smooth walled outer pipe, cylindrical ring wave crests and wave troughs to an inner-pipe. Pressure difference is generated between inner-canal and periphery by a pressure generating device. The pressure is measured by a pressure measuring device (19). The pressure difference is compared with a reference pressure difference corresponding to sealed connecting-pipe. An independent claim is included for a device for manufacturing connecting pipe tested in seal proof manner.

Description

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre.The invention relates to a method and an apparatus for producing leak-tightly tested composite pipes.

Im Bereich der Lüftungstechnik werden zunehmend Verbund-Rohre eingesetzt. Ein wichtiger Qualitätsaspekt ist dabei eine intakte Innenoberfläche der Verbund-Rohre ohne Löcher oder ähnliche Defekte. Diese würden zu störenden Geräuschentwicklungen führen. Das Kontrollieren der Innenoberfläche mit Kameras ist insbesondere bei aufgewickelten flexiblen Verbundrohren außerordentlich aufwändig und darüber hinaus auf kurze Verbund-Rohr-Längen beschränkt.In the field of ventilation technology, composite pipes are increasingly being used. An important quality aspect is an intact inner surface of the composite pipes without holes or similar defects. These would lead to disturbing noise developments. Controlling the inner surface with cameras is extremely complicated especially in wound flexible composite tubes and also limited to short composite tube lengths.

Der Erfindung liegt die Aufgabe zugrunde, ein einfaches Verfahren und eine entsprechende Vorrichtung zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre zu schaffen.The invention has for its object to provide a simple method and a corresponding device for generating tested for leaktight composite pipes.

Die Aufgabe wird durch die Merkmale der unabhängigen Ansprüche 1 und 5 gelöst. Der Kern der Erfindung besteht darin, bei einem Verbund-Rohr, das einen durchlaufenden Innen-Kanal zwischen dem glattwandigen Innen-Rohr und dem gewellten Außen-Rohr besitzt, eine Druckdifferenz zwischen dem Innen-Kanal und der Umgebung zu erzeugen. Ist das zu prüfende Verbund-Rohr dicht, so stellt sich bezüglich der Druckdifferenz ein Soll-Wert ein, d.h. es lässt sich im Innen-Kanal beispielsweise ein stabiler Unterdruck erzeugen. Weist das Innen-Rohr Defekte auf, so tritt Luft an dieser Stelle in den Innen-Kanal und der Druckdifferenz-Soll-Wert lässt sich nicht einstellen.The object is solved by the features of independent claims 1 and 5. The gist of the invention is to create a pressure differential between the inner channel and the environment in a composite pipe having a continuous inner channel between the inner smooth-walled pipe and the outer corrugated pipe. If the composite pipe to be tested is tight, then a desired value arises with regard to the pressure difference, ie, for example, a stable negative pressure can be generated in the inner channel. If the inner tube has defects, air enters the inner channel at this point and the desired pressure differential value can not be adjusted.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention will become apparent from the dependent claims.

Zusätzliche Merkmale und Einzelheiten der Erfindung ergeben sich aus der Beschreibung mehrerer Ausführungsbeispiele anhand der Zeichnung. Es zeigen

Fig. 1
eine Vorrichtung zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre,
Fig. 2
ein zu prüfendes Verbund-Rohr für die Vorrichtung gemäß Fig. 1,
Fig. 3
einen Schnitt gemäß der Schnittlinie III-III in Fig. 2,
Fig. 4
einen Schnitt gemäß der Schnittlinie IV-IV in Fig. 3,
Fig. 5
einen Schnitt gemäß der Schnittlinie V-V in Fig. 3,
Fig. 6
ein zu prüfendes Verbund-Rohr gemäß einem zweiten Ausführungsbeispiel,
Fig. 7
einen Schnitt gemäß der Schnittlinie VII-VII in Fig. 6,
Fig. 8
einen Schnitt gemäß der Schnittlinie VIII-VIII in Fig. 7,
Fig. 9
ein zu prüfendes Verbund-Rohr gemäß einem dritten Ausführungsbeispiel,
Fig. 10
einen Schnitt gemäß der Schnittlinie X-X in Fig. 9,
Fig. 11
ein zu prüfendes Verbund-Rohr gemäß einem vierten Ausführungsbeispiel,
Fig. 12
einen Schnitt gemäß der Schnittlinie XII-XII in Fig. 11,
Fig. 13
einen Schnitt gemäß der Schnittlinie XIII-XIII in Fig. 12,
Fig. 14
einen Schnitt gemäß der Schnittlinie XIV-XIV in Fig. 12,
Fig. 15
ein zu prüfendes Verbund-Rohr gemäß einem fünften Ausführungsbeispiel,
Fig. 16
einen Schnitt gemäß der Schnittlinie XVI-XVI in Fig. 15,
Fig. 17
einen Schnitt gemäß der Schnittlinie XVII-XVII in Fig. 16,
Fig. 18
ein zu prüfendes Verbund-Rohr gemäß einem sechsten Ausführungsbeispiel und
Fig. 19
einen Schnitt gemäß der Schnittlinie XIX-XIX in Fig. 18.
Additional features and details of the invention will become apparent from the description of several embodiments with reference to the drawings. Show it
Fig. 1
a device for the production of tightness-tested composite pipes,
Fig. 2
a test composite pipe for the device according to Fig. 1 .
Fig. 3
a section along the section line III-III in Fig. 2 .
Fig. 4
a section along the section line IV-IV in Fig. 3 .
Fig. 5
a section along the section line VV in Fig. 3 .
Fig. 6
a composite pipe to be tested according to a second embodiment,
Fig. 7
a section along the section line VII-VII in Fig. 6 .
Fig. 8
a section along the section line VIII-VIII in Fig. 7 .
Fig. 9
a composite pipe to be tested according to a third embodiment,
Fig. 10
a section along the section line XX in Fig. 9 .
Fig. 11
a composite pipe to be tested according to a fourth embodiment,
Fig. 12
a section along the section line XII-XII in Fig. 11 .
Fig. 13
a section along the section line XIII-XIII in Fig. 12 .
Fig. 14
a section according to the section line XIV-XIV in Fig. 12 .
Fig. 15
a composite pipe to be tested according to a fifth embodiment,
Fig. 16
a section along the section line XVI-XVI in Fig. 15 .
Fig. 17
a section along the section line XVII-XVII in Fig. 16 .
Fig. 18
a test composite pipe according to a sixth embodiment and
Fig. 19
a section according to the section line XIX-XIX in Fig. 18 ,

Im Folgenden wird unter Bezugnahme auf die Fig. 1 bis 5 ein erstes Ausführungsbeispiel der Erfindung beschrieben. Vorrichtungen zur Herstellung von doppelwandigen Verbund-Rohren 1 aus thermoplastischem Kunststoff sind beispielsweise aus der EP 509 216 A2 (entsprechend US-Patent 5,346,384 ) und der EP 563 575 A2 (entsprechend US-Patent 5,320,797 ) bekannt. Verbund-Rohre 1 weisen ein glattwandiges, kreiszylindrisches Innen-Rohr 2 sowie ein dieses umgebendes, konzentrisches, gewelltes Außen-Rohr 3 auf. Das Außen-Rohr 3 besteht aus ringzylindrischen Wellenbergen 4 und dazwischen liegenden Wellentälern 5, wobei die Wellentäler mit dem Innen-Rohr 2 verschweißt sind. Der Begriff "Ringzylinder" bzw. das abgeleitete Adjektiv "ringzylindrisch" werden auf einen Körper bezogen verstanden, der durch Parallelverschiebung eines geschlossenen Rings mit beliebiger Kontur entsteht. Die ringzylindrischen Wellenberge 4 können somit beispielsweise einen kreisförmigen, ovalen oder elliptischen Querschnitt besitzen. Zwischen jedem Wellenberg 4 und dem Innen-Rohr 2 sind Ring-Räume 6 gebildet. Jeweils unmittelbar benachbarte Ring-Räume 6 sind durch einen Verbindungs-Kanal 7 miteinander verbunden. Im Bereich des Verbindungs-Kanals 7 ist das Wellental 5 entlang eines kurzen Abschnitts nicht mit dem Innen-Rohr 2 verschweißt. Bei dem Verbund-Rohr 1 fluchten die Verbindungs-Kanäle 7 miteinander, d.h. sie befinden sich auf derselben angularen Position. Der sich von einem Ende 8 bis zum anderen Ende 9 des Verbund-Rohres 1 erstreckende, durchgehend verlaufende Raum zwischen dem Innen-Rohr 2 und dem Außen-Rohr 3 bestehend aus sich abwechselnden Ring-Räumen 6 und Verbindungs-Kanälen 7 wird als Innen-Kanal 10 bezeichnet.The following is with reference to the Fig. 1 to 5 a first embodiment of the invention described. Devices for producing double-walled composite pipes 1 made of thermoplastic material are for example from the EP 509 216 A2 (corresponding U.S. Patent 5,346,384 ) and the EP 563 575 A2 (corresponding U.S. Patent 5,320,797 ) known. Composite pipes 1 have a smooth-walled, circular cylindrical Inner tube 2 and a surrounding, concentric, corrugated outer tube 3 on. The outer tube 3 consists of ring-cylindrical wave crests 4 and intervening wave troughs 5, wherein the wave troughs are welded to the inner tube 2. The term "ring cylinder" or the derived adjective "ring-cylindrical" are understood to refer to a body that is formed by parallel displacement of a closed ring with any contour. The annular cylindrical wave peaks 4 can thus have, for example, a circular, oval or elliptical cross section. Between each wave crest 4 and the inner tube 2 ring spaces 6 are formed. In each case immediately adjacent annular spaces 6 are connected to each other by a connecting channel 7. In the region of the connection channel 7, the wave trough 5 is not welded to the inner tube 2 along a short section. In the composite pipe 1, the connection channels 7 are aligned with each other, that is, they are in the same angular position. The extending from one end 8 to the other end 9 of the composite tube 1, continuously extending space between the inner tube 2 and the outer tube 3 consisting of alternating annular spaces 6 and connecting channels 7 is used as indoor Designated channel 10.

Eine Vorrichtung 11 zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre 1 weist eine als Vakuum-Pumpe 12 ausgebildete Druck-/Unterdruck-Erzeugungs-Einrichtung auf. Es ist auch möglich, eine Überdruck erzeugende Pumpe zu verwenden. Die Pumpe 12 weist einen Einlass-Stutzen 13 sowie einen Auslass-Stutzen 14 auf. Der Auslass-Stutzen 14 ist gegenüber der Umgebung offen. Der Einlass-Stutzen 13 ist mit einem Schieber 15 zum Verschließen des Einlass-Stutzens 13 versehen. An dem Einlass-Stutzen 13 ist eine Leitung 16 angebracht, die als festes Rohr oder als Schlauch ausgebildet sein kann. An der Leitung 16 ist ein Be-/Entlüftungs-Schieber 17 angebracht, der es ermöglicht, den Innenraum 18 der Leitung 16 mit der Umgebung zu verbinden. Dem Schieber 17 nachgeordnet ist an der Leitung 16 eine Druck-Mess-Einrichtung in Form eines Manometers 19 zur Messung des Drucks im Innenraum 18 vorgesehen. Am Ende der Leitung 16 weist diese eine Muffe 20 auf, die auf das Ende 8 des Verbund-Rohres 1 gesteckt ist. Die Muffe 20 ist innen derart ausgebildet, dass der Innenraum 18 der Leitung 16 mit dem Innen-Kanal 10, nicht jedoch mit dem Verbund-Rohr-Innenraum 21 verbunden ist. Dies kann durch konzentrische Dichtringe erreicht werden, die das Verbund-Rohr 1 im Bereich eines Wellentals 5 von innen und außen umgreifen. Am anderen Ende 9 des Verbund-Rohres 1 ist der Innen-Kanal 10 durch einen Stopfen 22 verschlossen, der ähnlich aufgebaut sein kann wie die Muffe 20. Es ist auch möglich, das Verbund-Rohr 1 im Bereich des Endes 9 in einem Wellental 5 abzuschneiden und den dort befindlichen Verbindungs-Kanal 7 zuzuschweißen. Das Verbund-Rohr 1 kann, wie in Fig. 1 dargestellt, in aufgerollter Form vorliegen und durch Abbindebänder 23 zusammengehalten sein.An apparatus 11 for producing leak-tightly tested composite pipes 1 has a pressure / negative pressure generating device designed as a vacuum pump 12. It is also possible to use a positive pressure generating pump. The pump 12 has an inlet connection 13 and an outlet connection 14. The outlet port 14 is open to the environment. The inlet nozzle 13 is provided with a slide 15 for closing the inlet nozzle 13. At the inlet port 13, a conduit 16 is attached, which may be formed as a fixed tube or a hose. On the line 16 is a ventilation slide 17 attached, which makes it possible to connect the interior 18 of the conduit 16 with the environment. Downstream of the slide 17, a pressure-measuring device in the form of a manometer 19 for measuring the pressure in the interior 18 is provided on the line 16. At the end of the line 16, this has a sleeve 20 which is placed on the end 8 of the composite tube 1. The sleeve 20 is internally formed such that the interior 18 of the conduit 16 is connected to the inner channel 10, but not to the composite tube interior 21. This can be achieved by concentric sealing rings, which surround the composite pipe 1 in the region of a wave trough 5 from the inside and outside. At the other end 9 of the composite tube 1, the inner channel 10 is closed by a plug 22, which may be constructed similar to the sleeve 20. It is also possible, the composite tube 1 in the region of the end 9 in a wave trough fifth cut off and weld the connection channel 7 located there. The composite pipe 1 can, as in Fig. 1 represented, in rolled-up form and be held together by Abbindebänder 23.

Im Folgenden wird das Verfahren zur Prüfung der Dichtheit des Verbund-Rohres 1 beschrieben. Durch die Pumpe 12 wird bei geöffnetem Schieber 15 und geschlossenem Entlüftungs-Schieber 17 ein Unterdruck auf den Innen-Kanal 10 gegeben, d.h. die Luft wird aus diesem abgesaugt. Das Ende 9 des Innen-Kanals 10 ist verschlossen. Ist der Innen-Kanal 10 sowohl bezogen auf das Innen-Rohr 2 als auch auf das Außen-Rohr 3 dicht, so sinkt der durch das Manometer 19 gemessene Druck. Nach Erreichen eines vorgegebenen Unterdrucks wird der Schieber 15 geschlossen. Bei einem dichten Verbund-Rohr 1 ändert sich der durch das Manometer 19 gemessene Druck nun nicht mehr, so dass auch kleine Undichtheiten ausgeschlossen werden können. Nach dem Ende des Prüfvorganges wird die Leitung 16 durch den Entlüftungs-Schieber 17 be- oder entlüftet, die Muffe 20 und der Stopfen 22 werden von dem Verbund-Rohr 1 entfernt und das geprüfte Verbund-Rohr 1 wird als "dicht" klassifiziert.Hereinafter, the method for checking the tightness of the composite pipe 1 will be described. By the pump 12, a negative pressure on the inner channel 10 is given with open slide 15 and closed vent slide 17, ie, the air is sucked out of this. The end 9 of the inner channel 10 is closed. If the inner channel 10 is tight both with respect to the inner tube 2 and to the outer tube 3, the pressure measured by the pressure gauge 19 drops. After reaching a predetermined negative pressure of the slide 15 is closed. With a dense compound pipe 1, the pressure measured by the manometer 19 no longer changes, so that even small leaks can be ruled out. After the end of the test process, the line 16 vented through the venting slide 17, the sleeve 20 and the plug 22 are removed from the composite pipe 1 and the tested composite pipe 1 is classified as "leakproof".

Besitzt das Verbund-Rohr 1 größere Undichtheiten, so fällt der vom Manometer 19 gemessene Druck nach dem Anlegen des Unterdrucks auf das zu prüfende Verbund-Rohr 1 nicht oder nur geringfügig ab, da an der Undichtheits-Stelle ständig Luft einströmt. In diesem Fall kann das zu prüfende Verbund-Rohr 1 sofort als "undicht" klassifiziert werden. Im Fall kleinerer Undichtheiten wird ein vorgegebener Unterdruck im Innen-Kanal 10 erzeugt, der Schieber 15 geschlossen und abgewartet, ob der vom Manometer 19 gemessene Druck konstant bleibt. Steigt dieser durch Luft, die durch die Undichtheits-Stelle einströmt, langsam an, so wird das Verbund-Rohr 1 ebenfalls als "undicht" klassifiziert und die Muffe 20 und der Stopfen 22 entfernt.If the composite pipe 1 has larger leaks, then the pressure measured by the pressure gauge 19 does not drop or only slightly decreases after the application of the negative pressure to the composite pipe 1 to be tested, since air constantly flows in at the leak site. In this case, the composite pipe 1 to be tested can be immediately classified as "leaking". In the case of minor leaks, a predetermined negative pressure in the inner channel 10 is generated, the slide 15 is closed and waited to see if the pressure measured by the pressure gauge 19 remains constant. When it slowly rises due to air flowing in through the leak, the composite pipe 1 is also classified as "leaking" and the sleeve 20 and the plug 22 are removed.

Allgemein gesprochen wird durch die Pumpe 12 eine Druckdifferenz Δp(t) zwischen dem Innen-Kanal 10 und der Umgebung erzeugt. Die Entwicklung der Druckdifferenz Δp(t) wird durch das Manometer 19 gemessen. Es wird verglichen, ob der Verlauf der Druckdifferenz Δp(t) einem Soll-Wert ΔpSOLL(t) eines dichten Verbund-Rohrs entspricht oder nicht. Entsprechend wird das zu prüfende Verbund-Rohr als "dicht" oder als "undicht" klassifiziert. Dieser Vergleich kann auch automatisch durch eine mit der Druck-Mess-Einrichtung in datenübertragender Weise verbundene Daten-Verarbeitungs-Einrichtung durchgeführt werden. Es ist grundsätzlich möglich, das Prüfverfahren auch mit in der Pumpe 12 erzeugtem Überdruck durchzuführen. Es kommt lediglich auf die Druckdifferenz zwischen dem Innen-Kanal 10 und der Umgebung an. Darüber hinaus ist es nicht zwingend erforderlich, den Innen-Kanal 10 im Bereich des Endes 9 zu verschließen. Dort könnte auch eine zweite, der Pumpe 12 entsprechende Pumpe angebracht sein.Generally speaking, the pump 12 generates a pressure difference Δp (t) between the inner duct 10 and the environment. The development of the pressure difference Δp (t) is measured by the manometer 19. It is compared whether or not the course of the pressure difference Δp (t) corresponds to a target value Δp SOLL (t) of a sealed composite pipe. Accordingly, the composite pipe to be tested is classified as "leaking" or "leaking". This comparison can also be performed automatically by a data processing device connected to the pressure-measuring device in a data-transmitting manner. It is in principle possible to carry out the test method also with overpressure generated in the pump 12. It depends only on the pressure difference between the inner channel 10 and the environment. In addition, it is not mandatory required to close the inner channel 10 in the region of the end 9. There could also be a second, the pump 12 corresponding pump attached.

Im Folgenden werden weitere Verbund-Rohr-Typen beschrieben, die mit der Vorrichtung 11 und dem zugehörigen Verfahren ebenfalls auf Dichtheit geprüft werden können.In the following, further compound pipe types are described, which can also be checked for leaks with the device 11 and the associated method.

Bei dem in den Fig. 6 bis 8 dargestellten zweiten Ausführungsbeispiel erhalten konstruktiv identische Teile dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten a. Der wesentliche Unterschied gegenüber dem ersten Ausführungsbeispiel besteht darin, dass die Verbindungs-Kanäle 7 nicht alle fluchten, sondern jeweils unmittelbar benachbarte Verbindungs-Kanäle 7 um 90° gegeneinander versetzt sind und dies jeweils in dieselbe Winkelrichtung, so dass jeweils jeder vierte Verbindungs-Kanal 7 miteinander fluchtet.In the in the Fig. 6 to 8 illustrated second embodiment receive structurally identical parts the same reference numerals as in the first embodiment. Structurally different but functionally similar parts receive the same reference numerals with a following a. The main difference compared to the first embodiment is that the connection channels 7 are not all aligned, but each immediately adjacent connection channels 7 are offset by 90 ° from each other and this in the same angular direction, so that each fourth connection channel. 7 aligned with each other.

Die Fig. 9 bis 10 zeigen ein drittes Ausführungsbeispiel, wobei identische Teile dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel und für gleichwirkende, aber konstruktiv unterschiedliche Merkmale dieselben Bezugszeichen mit einem nachgestellten b verwendet werden. Wie beim ersten Ausführungsbeispiel fluchten alle Verbindungs-Kanäle 7 miteinander. Die gekrümmte Darstellung des Verbund-Rohres 1 stellt klar, dass es sich bei diesem um ein flexibles oder fest gekrümmtes Verbund-Rohr 1b handeln kann.The Fig. 9 to 10 show a third embodiment, wherein identical parts the same reference numerals as in the first embodiment and for the same effect, but constructively different features the same reference numerals with a trailing b are used. As in the first embodiment, all the connection channels 7 are aligned with each other. The curved representation of the composite pipe 1 makes it clear that this may be a flexible or tightly curved composite pipe 1b.

Im Folgenden wird unter Bezugnahme auf die Fig. 11 bis 14 ein viertes Ausführungsbeispiel der Erfindung beschrieben. Gleiche Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten c. Der wesentliche Unterschied gegenüber dem ersten Ausführungsbeispiel besteht darin, dass das Verbund-Rohr 1c einen ovalen Querschnitt besitzt. Eine Vorrichtung zur Fertigung von ovalen Verbund-Rohren ist beispielsweise aus der DE 10 2006 048 512.2 vom 13.10.2006 bekannt. Hinsichtlich der Anordnung der Verbindungs-Kanäle 7 ist das Verbund-Rohr 1c wie das Verbund-Rohr 1 aufgebaut. Lediglich der Querschnitt ist - wie aus Fig. 12 ersichtlich - oval.The following is with reference to the Fig. 11 to 14 A fourth embodiment of the invention is described. Same parts received the same reference numerals as in the first embodiment. Structurally different, but functionally similar parts receive the same reference numerals with a c. The essential difference from the first embodiment is that the composite pipe 1c has an oval cross-section. An apparatus for producing oval composite pipes is for example from the DE 10 2006 048 512.2 from 13.10.2006 known. With regard to the arrangement of the connection channels 7, the composite pipe 1c is constructed like the composite pipe 1. Only the cross section is - as from Fig. 12 visible - oval.

Im Folgenden wird unter Bezugnahme auf die Fig. 15 bis 17 ein Verbund-Rohr gemäß einem fünften Ausführungsbeispiel beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten d. Wie bei dem vierten Ausführungsbeispiel besitzt das Verbund-Rohr 1d einen ovalen Querschnitt. Die unmittelbar benachbarten Verbindungs-Kanäle sind wie bei dem Verbund-Rohr 1a jeweils gegeneinander in dieselbe Winkelrichtung versetzt, so dass jeweils alle vierten Verbindungs-Kanäle 7 miteinander fluchten. Die Verbindungs-Kanäle 7 befinden sich an den jeweiligen Enden der geraden Längsabschnitte 24 vor dem Beginn der Kreisbogenabschnitte 25, die gemeinsam den ovalen Querschnitt bilden.The following is with reference to the 15 to 17 a composite pipe according to a fifth embodiment described. Identical parts are given the same reference numerals as in the first embodiment. Structurally different, but functionally similar parts receive the same reference numerals with a d followed. As in the fourth embodiment, the composite pipe 1d has an oval cross section. The immediately adjacent connection channels are each offset from one another in the same angular direction as in the case of the composite tube 1a, so that in each case all fourth connection channels 7 are aligned with one another. The connecting channels 7 are located at the respective ends of the straight longitudinal sections 24 before the beginning of the circular arc sections 25, which together form the oval cross section.

Unter Bezugnahme auf die Fig. 18 und 19 wird ein sechstes Ausführungsbeispiel der Erfindung beschrieben. Konstruktiv identische Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten e. Das Verbund-Rohr 1e weist wie die Verbund-Rohre 1c und 1d einen ovalen Querschnitt auf. In Bezug auf die Krümmung des Verbund-Rohres entspricht es dem Verbund-Rohr 1b. Das Verbund-Rohr 1e mit ovalem Querschnitt kann flexibel oder fest gekrümmt ausgebildet sein.With reference to the FIGS. 18 and 19 A sixth embodiment of the invention will be described. Structurally identical parts receive the same reference numerals as in the first embodiment. Structurally different, but functionally similar parts receive the same reference numerals with a trailing e. The composite pipe 1e has like the composite tubes 1c and 1d an oval cross-section. With respect to the curvature of the composite pipe, it corresponds to the composite pipe 1b. The composite pipe 1e with an oval cross-section may be flexible or tightly curved.

Claims (10)

Verfahren zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre umfassend die folgenden Schritte: a. Bereitstellen eines Verbund-Rohres (1; ... ; 1e) i. mit einem glattwandigen Innen-Rohr (2; 2c; 2d; 2e), ii. mit einem gewellten Außen-Rohr (3; 3c; 3d; 3e) mit ringzylindrischen Wellenbergen (4; 4c; 4d) und mit dem Innen-Rohr (2; 2c; 2d; 2e) verbundenen Wellentälern (5; 5c; 5d), und iii. mit einem ersten Ende (9) und einem zweiten Ende (8), iv. wobei zwischen dem Innen-Rohr (2; 2c; 2d; 2e) und den Wellenbergen (4; 4c; 4d) Ring-Räume (6; 6c; 6d) gebildet sind, und v. wobei jeweils benachbarte Ring-Räume (6; 6c; 6d) durch mindestens einen Verbindungs-Kanal (7) unter Bildung eines vom ersten Ende (9) bis zum zweiten Ende (8) durchgehend verlaufenden Innen-Kanals (10) miteinander verbunden sind, b. Erzeugen einer Druckdifferenz Δp(t) zwischen dem Innen-Kanal (10) und der Umgebung mittels einer Druck-/Unterdruck-Erzeugungs-Einrichtung (12), c. Messen der Druckdifferenz Δp(t) durch eine Druck-Mess-Einrichtung (19), d. Vergleichen der Druckdifferenz Δp(t) mit einer einem dichten Verbund-Rohr entsprechenden Soll-Druckdifferenz ΔpSOLL(t). Method for producing leak-tight tested composite pipes comprising the following steps: a. Providing a composite pipe (1; ...; 1e) i. with a smooth-walled inner tube (2; 2c; 2d; 2e), ii. with a corrugated outer tube (3; 3c; 3d; 3e) having annular-cylindrical wave crests (4; 4c; 4d) and troughs (5; 5c; 5d) connected to the inner tube (2; 2c; 2d; 2e), and iii. with a first end (9) and a second end (8), iv. wherein annular spaces (6; 6c; 6d) are formed between the inner tube (2; 2c; 2d; 2e) and the wave crests (4; 4c; 4d), and v. wherein in each case adjacent annular spaces (6; 6c; 6d) are connected to one another by at least one connecting channel (7), forming an inner channel (10) extending continuously from the first end (9) to the second end (8), b. Generating a pressure difference Δp (t) between the inner channel (10) and the environment by means of a pressure / negative pressure generating device (12), c. Measuring the pressure difference Δp (t) by a pressure-measuring device (19), d. Compare the pressure difference Δp (t) with a dense compound pipe corresponding desired pressure difference Δp SOLL (t). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Druck-/Unterdruck-Erzeugungs-Einrichtung (12) nach der Erzeugung einer Druckdifferenz Δp(t) vom Innen-Kanal (10) getrennt wird.A method according to claim 1, characterized in that the pressure / negative pressure generating means (12) after the generation of a pressure difference Δp (t) from the inner channel (10) is disconnected. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass durch die Druck-Mess-Einrichtung (19) ermittelt wird, ob eine im Innen-Kanal (10) eingestellte Druckdifferenz Δp(t) konstant bleibt oder sich ändert.A method according to claim 2, characterized in that it is determined by the pressure-measuring device (19), whether a set in the inner channel (10) pressure difference Δp (t) remains constant or changes. Verfahren gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass nach dem Prüfen der Dichtheit des Verbund-Rohres (1) der Innen-Kanal (10) be- bzw. entlüftet wird.Method according to one of the preceding claims, characterized in that after checking the tightness of the composite pipe (1) the inner channel (10) is vented. Vorrichtung zur Erzeugung auf Dichtheit geprüfter Verbund-Rohre umfassend a. mindestens ein Verbund-Rohr (1; ... ; 1e) i. mit einem glattwandigen Innen-Rohr (2; 2c; 2d; 2e), ii. mit einem gewellten Außen-Rohr (3; 3c; 3d; 3e) mit ringzylindrischen Wellenbergen (4; 4c; 4d) und mit dem Innen-Rohr (2; 2c; 2d; 2e) verbundenen Wellentälern (5; 5c; 5d), und iii. mit einem ersten Ende (9) und einem zweiten Ende (8), iv. wobei zwischen dem Innen-Rohr (2; 2c; 2d; 2e) und den Wellenbergen (4; 4c; 4d) Ring-Räume (6; 6c; 6d) gebildet sind, v. wobei jeweils benachbarte Ring-Räume (6; 6c; 6d) durch mindestens einen Verbindungs-Kanal (7) unter Bildung eines vom ersten Ende (9) bis zum zweiten Ende (8) durchgehend verlaufenden Innen-Kanals (10) miteinander verbunden sind, und vi. wobei der Innen-Kanal (10) am ersten Ende (9) verschlossen ist, b. eine Druck-/Unterdruck-Erzeugungs-Einrichtung (12), welche mit dem Innenkanal (10) am zweiten Ende (8) über eine Leitung (16) verbunden ist, und c. eine Druck-Mess-Einrichtung (19) zur Messung einer Druckdifferenz Δp(t) zwischen dem Innen-Kanal (10) und der Umgebung. Device for generating leak-tightness tested composite pipes comprising a. at least one composite pipe (1; ...; 1e) i. with a smooth-walled inner tube (2; 2c; 2d; 2e), ii. with a corrugated outer tube (3; 3c; 3d; 3e) having annular-cylindrical wave crests (4; 4c; 4d) and troughs (5; 5c; 5d) connected to the inner tube (2; 2c; 2d; 2e), and iii. with a first end (9) and a second end (8), iv. wherein annular spaces (6; 6c; 6d) are formed between the inner tube (2; 2c; 2d; 2e) and the wave crests (4; 4c; 4d), v. wherein in each case adjacent annular spaces (6; 6c; 6d) are connected to one another by at least one connecting channel (7), forming an inner channel (10) extending continuously from the first end (9) to the second end (8), and vi. the inner channel (10) being closed at the first end (9), b. a pressure / negative pressure generating means (12) which is connected to the inner channel (10) at the second end (8) via a line (16), and c. a pressure-measuring device (19) for measuring a pressure difference Δp (t) between the inner channel (10) and the environment. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass der Innen-Kanal (10) am ersten Ende (9) durch einen Stopfen (22) verschlossen ist.Apparatus according to claim 5, characterized in that the inner channel (10) at the first end (9) by a plug (22) is closed. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass der Innenkanal (10) am ersten Ende (9) verschweißt ist.Apparatus according to claim 5, characterized in that the inner channel (10) at the first end (9) is welded. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass die Leitung (16) über eine Muffe (20) mit dem Innenkanal (10) im Bereich des zweiten Endes (8) verbunden ist.Apparatus according to claim 5, characterized in that the line (16) via a sleeve (20) with the inner channel (10) in the region of the second end (8) is connected. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass in der Leitung (16) ein Schieber (15) angeordnet ist.Apparatus according to claim 5, characterized in that in the conduit (16) a slide (15) is arranged. Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, dass in der Leitung (16) ein Be-/Entlüftungs-Schieber (17) angeordnet ist.Apparatus according to claim 5, characterized in that in the conduit (16) a ventilation / vent slide (17) is arranged.
EP07024587A 2007-12-19 2007-12-19 Test method and device Not-in-force EP2072988B1 (en)

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DE502007006387T DE502007006387D1 (en) 2007-12-19 2007-12-19 Test method and device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620683A1 (en) * 2012-01-24 2013-07-31 Ralph Peter Hegler Composite pipe for air conditioning and ventilation technology
CN104454786A (en) * 2014-09-29 2015-03-25 同济大学 Fluid energy loss test system for long-distance multi-layer wound hydraulic hose
RU225379U1 (en) * 2023-12-20 2024-04-18 Общество с ограниченной ответственностью "Газпром трансгаз Томск" (ООО "Газпром трансгаз Томск") Gas mask hose line testing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH652502A5 (en) * 1981-12-01 1985-11-15 Wirth & Co Ag Method and device for testing lines
EP0509216A2 (en) 1991-04-08 1992-10-21 Wilhelm Hegler Device for the manufacturing of plastic tubes
EP0563575A2 (en) 1992-03-31 1993-10-06 Wilhelm Hegler Method and apparatus for continuous production of a composite pipe with sleeve
US20050166666A1 (en) * 2004-02-04 2005-08-04 Laserfront Technologies, Inc. Piping structure having leak detection function and leak detector
DE102006048512A1 (en) 2006-10-13 2008-04-17 Hegler, Ralph Peter, Dr.-Ing. Apparatus for producing composite pipes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH652502A5 (en) * 1981-12-01 1985-11-15 Wirth & Co Ag Method and device for testing lines
EP0509216A2 (en) 1991-04-08 1992-10-21 Wilhelm Hegler Device for the manufacturing of plastic tubes
US5346384A (en) 1991-04-08 1994-09-13 Wilhelm Hegler Apparatus for the production of plastic pipes
EP0563575A2 (en) 1992-03-31 1993-10-06 Wilhelm Hegler Method and apparatus for continuous production of a composite pipe with sleeve
US5320797A (en) 1992-03-31 1994-06-14 Wilhelm Hegler Method and apparatus for the continuous manufacture of a compound pipe with a pipe socket
US5320797B1 (en) 1992-03-31 1997-04-08 Wilhelm Hegler Method and apparatus for the continuous manufacture of a compound pipe with a pipe socket
US20050166666A1 (en) * 2004-02-04 2005-08-04 Laserfront Technologies, Inc. Piping structure having leak detection function and leak detector
DE102006048512A1 (en) 2006-10-13 2008-04-17 Hegler, Ralph Peter, Dr.-Ing. Apparatus for producing composite pipes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620683A1 (en) * 2012-01-24 2013-07-31 Ralph Peter Hegler Composite pipe for air conditioning and ventilation technology
CN104454786A (en) * 2014-09-29 2015-03-25 同济大学 Fluid energy loss test system for long-distance multi-layer wound hydraulic hose
CN104454786B (en) * 2014-09-29 2016-08-17 同济大学 The test system of distance multilaminate coiled hydraulic hose fluid energy loss
RU226501U1 (en) * 2023-12-15 2024-06-05 Общество с ограниченной ответственностью "Газпром трансгаз Томск" (ООО "Газпром трансгаз Томск") Testing and crimping device for gas mask hose line
RU225379U1 (en) * 2023-12-20 2024-04-18 Общество с ограниченной ответственностью "Газпром трансгаз Томск" (ООО "Газпром трансгаз Томск") Gas mask hose line testing device

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EP2072988B1 (en) 2011-01-26
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